import pygame
from settings import Settings

class Ship():
    def __init__(self,ai_setting,screen):
        self.screen=screen
        #加载图像，外接矩形
        self.image = pygame.image.load('images/ship.bmp')
        self.rect = self.image.get_rect()
        self.screen_rect = screen.get_rect()
        ai_settings=Settings()
        self.ai_settings=ai_settings
        #放在屏幕底部
        self.rect.centerx = self.screen_rect.centerx
        self.rect.bottom = self.screen_rect.bottom
        self.center = float(self.rect.centerx)
        #标志
        self.moving_right = False
        self.moving_left = False
    def update(self):
        if self.moving_right and self.rect.right < self.screen_rect.right:
            self.center +=self.ai_settings.ship_speed_factor
        if self.moving_left and self.rect.left > 0:
            self.center -=self.ai_settings.ship_speed_factor

        self.rect.centerx = self.center
    def blitme(self):
        self.screen.blit(self.image, self.rect)


    
